Molding machine



W. J. RvxN MOLUING MACHINE April 15 1924. v 11,490,273

. Filed June 20. 1921 2 Sheets-Sheet l uw. J.

April l5, 1924.

IRVIN MOLDING MACHINE Filed June 2o. 1921 2 sheezssneez 2 auf? Patented Apr. 15, 1924.

narran :sra'rss WALTER J. IRVIN, F AKRON, OHIO.

monomer MAoHrNE.

Application led June 20, 17921. Serial No. 473,802.

To all whom it may concern.'

Be it known that I, WALTER J. IRVIN, a

n citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented new and useful Improvements in Molding Machines, of which the following is a specification.

rlhis invention relates to molding machines of the type especially adaptedrfor use in constructing molds for the manufacture of pulleys and similar castings.

It is an object of the invention to provide a strong, durable molding machine of simple, economical construction, which will be i' convenient to operate and which may be quickly` adjusted to manufacture molds for pulleys ofdierent designs and sizes.;

.A particular object is to provide a thoroughly practicable molding machine which may be4 used in connection with a `jolting deviceand whichwhen so used may be conveniently adjusted and firmly held in adjustment.

Y With the above and other objects in View which will vappear as this description proceeds, my invention comp-rises the novel features of construction, combination and arrangement" ofA parts hereinafter described and illustrated in the accompanying drawing, which forms a part hereof and in which I have shown a preferred embodiment of the inVention,--it being understoodjthatthe invention is not confined to the precise details of construction illustrated, but that changes,

L variations; and modifications may be made which come within ed claims.A n Y ln the drawings in which similar numerals the scope ofthe appendof'reference have been employed to designate the same or like parts as they Vmay appear in the several views, 4Figure 1 is a plan View of a molding machineV constructed in accordance with this invention( l Y Figure'2 is a view showing the same in central vertical section Vand ltaken as indicated by the line 2-.2 of Figurel.- Y

' Figurer-Bris af horizontal sectional view taken` yapproximately -onv the line 3 3 of Fiure2."

eferringnow to amore detailed description of theY invention, with reference 'tothe accompanying drawing, the'numeral 5 denotes a tubularsupporting standard whichV is provided at its lower end with an outwardly projecting, circumferentially extending flange. The standard 5 .is also provided at its upper end with an outwardly projecting'annular flange 7 which isv formed thereon soasto form a supporting table for a molding flask or one of the sections thereof. The numeral 8 kdenotes a horizontally disposedwall which is integral with the standard 5 and extends entirely across the opening inY said standard 5 in spaced relation to the-bottom thereof, thus forming an upper chamber 9 and a relatively smaller lower chamber 10. The ange 6 is provided on its upper face with a radially directed protruding portion 11 and a radially directed bore 12 extends through said protruding portion 11 and through the wall of the standard 5. A shaft 13, is'rotatablyv mounted in the bore 12V so as to kproject 4radially into the chamber 10to apoint adjacentthecenter thereof. The inwardly projecting end of the shaft 13 is journaled in a suitable bracket 1li which is securedftofpthe wall 8` by the boltsI 15. The outwardly projecting end o-f the shaft 13 is provided with a handwheel 16 which is rigidly secured thereto and a beveled pinion 17 is-similarly secured on theinner projecting end of said shaft y13.

,e The numeral |19 denotes a screw shaft whichiis offset smaller adjacent the lower end thereof'to form a reduced portion 20. The wall 8-is provided Witha centrally positioned verticalgbore 18 and the reduced port-ionv 20. o-f the ,screw shaft-19 is rotatably mounted in 'said bore with the threaded portionfof thegshaft19y projecting upwardly from the wall 8.andthe lower end 20 of said shaft projecting downwardly beyond said-wall.l A beveled pinion 21 isrigidly secured :to the downwardly projecting end 2O of the shaft-,19 so as to mesh with the pinion 17 on the shaft 13. .x

`The numeral 22 denotes a tubular center postwhich is provided at its lower end with an outwardly projecting flange 23 which is boltedor otherwisesecured to the wall '8.rThe/upperendof the post 22 is closed with ythe Wallf24, the'upper surface ofwhich isrdisposed--in 'the samehorizontal plane with-theupperface-ofthe flange 7 .f .The

- center post V22 is-vprovided with aplurality on the shaft 19. The'numeral 28 denotes a plurality of radiating arms which are formed on said spider so that oneof said arms 28 extends through each slot or opening and projects lbeyonclthe post 22. A n annular plate 29 having a width sufficient to loosely fill the space between the standard 5 and the center post 22 is positioned on the outwardly projecting 4ends of the arms 28 to which it is secured by means of the screw bolts-29. The numeral 30 denotes a cylindrical pattern Lwhich is provided at the bottom thereof with an inwardly projecting annular flange 31' and is detachably secured to vthe plate 29 by means of the bolts 32. Thepattern is preferably formed so that the upper edge thereof is in lthe same horizontal plane with the upper edge of the top '24 of the kpost 22 and the upper surface of the flange 7, when the spider 26 is in a downward position. The inner edge of the standard 5 is cut away on its `upper end to provide an annular rabbet which forms a seat Lfor the ring 33 'and the ring 33 closes the opening between the upper edge of the pattern 30 and the casing 5. The upper plate 24eV of the center post 22 is also rabbeted at its upper edge to provide aseat` 35 for the annular plate 34 which is ladapted to fill the space between ysaid center post and the pattern 30. 'I

In using my improved machine to manufacture pulleys, a'tlask'section is placed on the flange 7 and the hand *wheel 16 is -ro' tated in the proper direction :to KIforce the spider- 26 upwardly on thescrew shaft 19. The pattern 30 is thus forced upwardly 11ntil it projects the desired distanoeabovethe upper face of the flange 7. The hub and spoke pattern are then assembled on the patternftable formed by the wall "24 and the annular plate 34.` The` flask section is then filled wit-hsand which is packed firmly about the pattern. The riml pattern' 30 is then loweredby reversely rotatiii the hand wheel 16 and the li-askis removed Afrom the machine.` l

rEhe machine is designed particularly for use on' a jolting device, the construction thereof being such that it will not be jolted out of adjustment by theV jolting operation. It will be seen;y that the pattern 30 may be furnished in a plurality of sizes which may be vinterchangeably used in the maf chine, the rings 32 and 35 also being vfurnished in a number of different sizes so that the opening between the -flange 7 and the pattern and between the pattern and the` center plate 24e maybe closed to provide a relatively smooth `flask and pattern table.

Having thus described vmy `invention and illustrated `a preferred embodiment thereof whatV I claim as 'new and desireto secure by Letters Patent iszl. In a device of the class described, a tubular support, an outwardly projecting base flange at the bottom thereof; an outwardly projecting annular flask supporting flange at the top thereof, a horizontal partition extending across said support in spaced relation to the bottomV thereof, a tubular center post supported by said partition, the upper end of said post being provided with a wall which is disposed in the same horizontal plane with said flask-supporting flange, a plurality of regularly spaced, vertically disposed slots in said post, a centrally positioned vertical bore in said partition, a shaft rotatably mountedin said bore-so as to project from both sides of said partition, the upwardly projecting portion of said shaft provided with a screw thread, abeveled pinion on the downwardly projecting end of said shaft, a spider, having a threaded bore operatively mounted on the threaded portion of said shaft with the arms of the spider project-ing throu h the slots in said post; an annular plate adapted to loosely fity between the center 'post' and the walls of said support, said plate being securedY to the arms of said spider, a tubular pattern concentrically arrangedvbetween said postand said support,said patte-rn being detachablysecured to said plate, a. ring supported by said center postsso as to lclose the opening between said post and said pattern and a ring arranged on said support to close the opening between the support and said pattern, the upper face of said rings being disposed in the same horizontal plane with the tflask supportingv flange, a radially directed horizontal bore extending into said support at a point adjacent the bottom thereofg'a shaft journaled in said bore, a beveled pinion secured to the inner end of said shaft so' astomesh-with the first named rpinion and a hand wheel on the outwardly projectifng'end of'said` horizontal shaft.l f A 2; `In'- a device of the class described, a tubular support, an outwardly projecting annular flask supporting flange at .the top thereof, a --horizontal partition Y extending across said support in spaced relation to the bottom thereof, a tubular center post supported by said partition, the upper end of said post being provided with a wall which is disposed in the same horizontal plane' with said flask-supporting flange, a plurality of regularly spaced vertical disposed slots in said post, a centrally positioned, vertical bore in said partition, a shaft rotatably mounted in said bore so as to project from both sides'of said partition, the upwardly projecting portion of said shaft provided with a screw thread; a spider having a threaded bore, operatively mounted on the threaded portion of said shaft withv the arms of theL spider projecting through the Vslot in saidpost'; an annular plate adapted to loosely lit between the center post and the walls of said support, said plate being secured to the arms of said spider, a tubular pattern concentrically arranged between said post and said support, said pattern being detachably secured to said plate, a ring supported by said center post so as to close the opening between said post and said pattern and a ring arranged on said support to close the opening between the support and said pattern and manually operable means to rotate said shaft to raise and lower said pattern.

In a molding machine, the combination of a tubular casing provided with a iask supporting flange, a tubular center post provided with pattern supporting means, a cylindrical rim pattern concentrically arranged therebetween, slots in the side of said post, a spider in said post, the arms of said spider projecting from said slots, means connecting the said pattern to said spider, a screw shaft in said post, said spider operatively mounted thereon and means to rotate said shaft to raiseand lower said pattern.

4. In a molding machine, the combination of a tubular casing provided lwith a ask supporting flange, a horizontal partition in said casing, a center post supported by saidY partition, a pattern table supported by said post, a cylindrical rim pattern concentrically arranged 'between said casing and said post, regularly arranged vertical slots in the wall of said posts, a screw shaft rotatably secured to said partition so as to extend upwardly in the center of said post, a member operatively mounted on said shaft so as to be movable vertically by the rotation thereof, means connecting said member with said rim pattern and means to rotate said shaft to raise and lower same.

5. In a molding machine, a vertically movable pattern and means to raise and lower said pattern, said means including a screw shaft, aV nut thereon, direct connecting means between said nut and said pattern and means to rotate said shaft.

6. A molding machine of the class described including a flask table, a vertically movable rim pattern and means to raise and lower said pattern, said means including a screw shaft, a nut thereon and means to rigidly fix said pattern to said nut.

In testimony whereof I have hereunto 66 set my hand.

WALTER J. IRVIN. 

